* [Nostr Relay Framework v2.2.15](https://github.com/fiatjaf/relayer) – Framework for implementing custom Nostr relay servers.

* [PORTAL v2.3.7](https://github.com/gosuda/portal-tunnel) – Permissionless, self-hosted end-to-end encrypted relay network for exposing localhost to the public internet.

* [Portal v2.3.5](https://github.com/gosuda/webhole) – Portal is a localhost tunnel and relay network that publishes local apps, APIs, tools, and agents via self-hosted or public trustless relays with end-to-end tenant TLS.

* [nostr-relay v0.0.250](https://github.com/mattn/nostr-relay) – Relay for the Nostr protocol that supports SQLite storage replicated to S3 via Litestream.